<?php

/**
 * @file
 * Editor integration functions for YUI editor.
 */

/**
 * Plugin implementation of hook_editor().
 */
function wysiwyg_yui_editor() {
    $editor['yui'] = array(
        'title' => 'YUI editor',
        'vendor url' => 'http://developer.yahoo.com/yui/editor/',
        'download url' => 'http://developer.yahoo.com/yui/download/',
        'library path' => wysiwyg_get_path('yui') . '/build',
        'libraries' => array(
            'min' => array(
                'title' => 'Minified',
                'files' => array(
                    'yahoo-dom-event/yahoo-dom-event.js',
                    'animation/animation-min.js',
                    'element/element-min.js',
                    'container/container-min.js',
                    'menu/menu-min.js',
                    'button/button-min.js',
                    'editor/editor-min.js',
                ),
            ),
            'src' => array(
                'title' => 'Source',
                'files' => array(
                    'yahoo-dom-event/yahoo-dom-event.js',
                    'animation/animation.js',
                    'element/element.js',
                    'container/container.js',
                    'menu/menu.js',
                    'button/button.js',
                    'editor/editor.js',
                ),
            ),
        ),
        'version callback' => 'wysiwyg_yui_version',
        'themes callback' => 'wysiwyg_yui_themes',
        'load callback' => 'wysiwyg_yui_load',
        'settings callback' => 'wysiwyg_yui_settings',
        'plugin callback' => 'wysiwyg_yui_plugins',
        'versions' => array(
            '2.7.0' => array(
                'js files' => array('yui.js'),
            ),
        ),
    );
    return $editor;
}

/**
 * Detect editor version.
 *
 * @param $editor
 *   An array containing editor properties as returned from hook_editor().
 *
 * @return
 *   The installed editor version.
 */
function wysiwyg_yui_version($editor) {
    $library = $editor['library path'] . '/editor/editor.js';
    if (!file_exists($library)) {
        return;
    }
    $library = fopen($library, 'r');
    $max_lines = 10;
    while ($max_lines && $line = fgets($library, 60)) {
        if (preg_match('@version:\s([0-9\.]+)@', $line, $version)) {
            fclose($library);
            return $version[1];
        }
        $max_lines--;
    }
    fclose($library);
}

/**
 * Determine available editor themes or check/reset a given one.
 *
 * @param $editor
 *   A processed hook_editor() array of editor properties.
 * @param $profile
 *   A wysiwyg editor profile.
 *
 * @return
 *   An array of theme names. The first returned name should be the default
 *   theme name.
 */
function wysiwyg_yui_themes($editor, $profile) {
    return array('sam');
}

/**
 * Perform additional actions upon loading this editor.
 *
 * @param $editor
 *   A processed hook_editor() array of editor properties.
 * @param $library
 *   The internal library name (array key) to use.
 */
function wysiwyg_yui_load($editor, $library) {
    drupal_add_css($editor['library path'] . '/menu/assets/skins/sam/menu.css');
    drupal_add_css($editor['library path'] . '/button/assets/skins/sam/button.css');
    drupal_add_css($editor['library path'] . '/fonts/fonts-min.css');
    drupal_add_css($editor['library path'] . '/container/assets/skins/sam/container.css');
    drupal_add_css($editor['library path'] . '/editor/assets/skins/sam/editor.css');
}

/**
 * Return runtime editor settings for a given wysiwyg profile.
 *
 * @param $editor
 *   A processed hook_editor() array of editor properties.
 * @param $config
 *   An array containing wysiwyg editor profile settings.
 * @param $theme
 *   The name of a theme/GUI/skin to use.
 *
 * @return
 *   A settings array to be populated in
 *   Drupal.settings.wysiwyg.configs.{editor}
 */
function wysiwyg_yui_settings($editor, $config, $theme) {
    $settings = array(
        'theme' => $theme,
        'animate' => TRUE,
        'handleSubmit' => TRUE,
        'markup' => 'xhtml',
        'ptags' => TRUE,
    );

    if (isset($config['path_loc']) && $config['path_loc'] != 'none') {
        $settings['dompath'] = $config['path_loc'];
    }
    // Enable auto-height feature when editor should be resizable.
    if (!empty($config['resizing'])) {
        $settings['autoHeight'] = TRUE;
    }

    $settings += array(
        'toolbar' => array(
            'collapse' => FALSE,
            'draggable' => TRUE,
            'buttonType' => 'advanced',
            'buttons' => array(),
        ),
    );
    if (!empty($config['buttons'])) {
        $buttons = array();
        foreach ($config['buttons'] as $plugin => $enabled_buttons) {
            foreach ($enabled_buttons as $button => $enabled) {
                $extra = array();
                if ($button == 'heading') {
                    $extra = array('menu' => array(
                            array('text' => 'Normal', 'value' => 'none', 'checked' => TRUE),
                    ));
                    if (!empty($config['block_formats'])) {
                        $headings = array(
                            'p' => array('text' => 'Paragraph', 'value' => 'p'),
                            'h1' => array('text' => 'Heading 1', 'value' => 'h1'),
                            'h2' => array('text' => 'Heading 2', 'value' => 'h2'),
                            'h3' => array('text' => 'Heading 3', 'value' => 'h3'),
                            'h4' => array('text' => 'Heading 4', 'value' => 'h4'),
                            'h5' => array('text' => 'Heading 5', 'value' => 'h5'),
                            'h6' => array('text' => 'Heading 6', 'value' => 'h6'),
                        );
                        foreach (explode(',', $config['block_formats']) as $tag) {
                            if (isset($headings[$tag])) {
                                $extra['menu'][] = $headings[$tag];
                            }
                        }
                    }
                } else if ($button == 'fontname') {
                    $extra = array('menu' => array(
                            array('text' => 'Arial', 'checked' => TRUE),
                            array('text' => 'Arial Black'),
                            array('text' => 'Comic Sans MS'),
                            array('text' => 'Courier New'),
                            array('text' => 'Lucida Console'),
                            array('text' => 'Tahoma'),
                            array('text' => 'Times New Roman'),
                            array('text' => 'Trebuchet MS'),
                            array('text' => 'Verdana'),
                    ));
                }
                $buttons[] = wysiwyg_yui_button_setting($editor, $plugin, $button, $extra);
            }
        }
        // Group buttons in a dummy group.
        $buttons = array('group' => 'default', 'label' => '', 'buttons' => $buttons);
        $settings['toolbar']['buttons'] = array($buttons);
    }

    if (isset($config['css_setting'])) {
        if ($config['css_setting'] == 'theme') {
            $settings['extracss'] = wysiwyg_get_css();
        } else if ($config['css_setting'] == 'self' && isset($config['css_path'])) {
            $settings['extracss'] = strtr($config['css_path'], array('%b' => base_path(), '%t' => path_to_theme()));
            $settings['extracss'] = explode(',', $settings['extracss']);
        }
        // YUI only supports inline CSS, so we need to use @import directives.
        // Syntax: '@import "/base/path/to/theme/style.css"; '
        if (!empty($settings['extracss'])) {
            $settings['extracss'] = '@import "' . implode('"; @import "', $settings['extracss']) . '";';
        }
    }

    return $settings;
}

/**
 * Create the JavaScript structure for a YUI button.
 *
 * @param $editor
 *   A processed hook_editor() array of editor properties.
 * @param $plugin
 *   The internal name of a plugin.
 * @param $button
 *   The internal name of a button, defined by $plugin.
 * @param $extra
 *   (optional) An array containing arbitrary other elements to add to the
 *   resulting button.
 */
function wysiwyg_yui_button_setting($editor, $plugin, $button, $extra = array()) {
    static $plugins;

    if (!isset($plugins)) {
        // @todo Invoke all enabled plugins, not just internals.
        $plugins = wysiwyg_yui_plugins($editor);
    }

    // Return a simple separator.
    if ($button === 'separator') {
        return array('type' => 'separator');
    }
    // Setup defaults.
    $type = 'push';
    $label = $plugins[$plugin]['buttons'][$button];

    // Special handling for certain buttons.
    if (in_array($button, array('heading', 'fontname'))) {
        $type = 'select';
        $label = $extra['menu'][0]['text'];
    } elseif (in_array($button, array('fontsize'))) {
        $type = 'spin';
    } elseif (in_array($button, array('forecolor', 'backcolor'))) {
        $type = 'color';
    }

    $button = array(
        'type' => $type,
        'label' => $label,
        'value' => $button,
    );
    // Add arbitrary other elements, if defined.
    if (!empty($extra)) {
        $button = array_merge($button, $extra);
    }
    return $button;
}

/**
 * Return internal plugins for this editor; semi-implementation of hook_wysiwyg_plugin().
 */
function wysiwyg_yui_plugins($editor) {
    return array(
        'default' => array(
            'buttons' => array(
                'bold' => t('Bold'), 'italic' => t('Italic'), 'underline' => t('Underline'),
                'strikethrough' => t('Strike-through'),
                'justifyleft' => t('Align left'), 'justifycenter' => t('Align center'), 'justifyright' => t('Align right'), 'justifyfull' => t('Justify'),
                'insertunorderedlist' => t('Bullet list'), 'insertorderedlist' => t('Numbered list'),
                'outdent' => t('Outdent'), 'indent' => t('Indent'),
                'undo' => t('Undo'), 'redo' => t('Redo'),
                'createlink' => t('Link'),
                'insertimage' => t('Image'),
                'forecolor' => t('Font Color'), 'backcolor' => t('Background Color'),
                'superscript' => t('Sup'), 'subscript' => t('Sub'),
                'hiddenelements' => t('Show/hide hidden elements'),
                'removeformat' => t('Remove format'),
                'heading' => t('HTML block format'), 'fontname' => t('Font'), 'fontsize' => t('Font size'),
            ),
            'internal' => TRUE,
        ),
    );
}

